Why is this BindingAdapter not working in Kotlin?

Question

I have a ViewModel with:

val imageUrl = ObservableField()

My layout XML has:

Answer 1

We do not work with images that much but here is our code

Model

class Habit(val title:String,val description:String,val image:Bitmap) {

and the Adapter

class HabitsAdapter(val habits:List): RecyclerView.Adapter() {

class HabitViewHolder(val card:View):RecyclerView.ViewHolder(card)

override fun onBindViewHolder(holder: HabitViewHolder, index: Int) {

    if(holder != null){
        val habit = habits[index]
        holder.card.tvTitle.text = habit.title
        holder.card.tvDescription.text = habit.description
        holder.card.ivINsingle_card.setImageBitmap(habit.image)
    }
}
    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): HabitViewHolder {
        val view = LayoutInflater.from(parent.context).inflate(R.layout.single_card, parent,false)
        return HabitViewHolder(view)
    }

    override fun getItemCount(): Int {
        return habits.size
    }
}